export function timeFix () {
  const time = new Date()
  const hour = time.getHours()
  return hour < 9 ? '早上好' : hour <= 11 ? '上午好' : hour <= 13 ? '中午好' : hour < 20 ? '下午好' : '晚上好'
}

export function welcome () {
  const arr = ['休息一会儿吧', '准备吃什么呢?', '要不要打一把 DOTA', '我猜你可能累了']
  const index = Math.floor(Math.random() * arr.length)
  return arr[index]
}

/**
 * 触发 window.resize
 */
export function triggerWindowResizeEvent () {
  const event = document.createEvent('HTMLEvents')
  event.initEvent('resize', true, true)
  event.eventType = 'message'
  window.dispatchEvent(event)
}

export function handleScrollHeader (callback) {
  let timer = 0

  let beforeScrollTop = window.pageYOffset
  callback = callback || function () {}
  window.addEventListener(
    'scroll',
    event => {
      clearTimeout(timer)
      timer = setTimeout(() => {
        let direction = 'up'
        const afterScrollTop = window.pageYOffset
        const delta = afterScrollTop - beforeScrollTop
        if (delta === 0) {
          return false
        }
        direction = delta > 0 ? 'down' : 'up'
        callback(direction)
        beforeScrollTop = afterScrollTop
      }, 50)
    },
    false
  )
}

export function isIE () {
  const bw = window.navigator.userAgent
  const compare = (s) => bw.indexOf(s) >= 0
  const ie11 = (() => 'ActiveXObject' in window)()
  return compare('MSIE') || ie11
}

/**
 * Remove loading animate
 * @param id parent element id or class
 * @param timeout
 */
export function removeLoadingAnimate (id = '', timeout = 1500) {
  if (id === '') {
    return
  }
  setTimeout(() => {
    document.body.removeChild(document.getElementById(id))
  }, timeout)
}
export function scorePassword (pass) {
  let score = 0
  if (!pass) {
    return score
  }
  // award every unique letter until 5 repetitions
  const letters = {}
  for (let i = 0; i < pass.length; i++) {
      letters[pass[i]] = (letters[pass[i]] || 0) + 1
      score += 5.0 / letters[pass[i]]
  }

  // bonus points for mixing it up
  const variations = {
      digits: /\d/.test(pass),
      lower: /[a-z]/.test(pass),
      upper: /[A-Z]/.test(pass),
      nonWords: /\W/.test(pass)
  }

  let variationCount = 0
  for (var check in variations) {
      variationCount += (variations[check] === true) ? 1 : 0
  }
  score += (variationCount - 1) * 10

  return parseInt(score)
}

// 通过文件链接下载文件，（需要同源）
export function fileLinkToStreamDownload(url, fileName, type) {
  let reg = /^([hH][tT]{2}[pP]:\/\/|[hH][tT]{2}[pP][sS]:\/\/)(([A-Za-z0-9-~]+).)+([A-Za-z0-9-~\/])+$/;
  if (!reg.test(url)) {
    throw new Error("传入参数不合法,不是标准的文件链接");
  } else {
    let xhr = new XMLHttpRequest();
    xhr.open('get', url, true);
    xhr.setRequestHeader('Content-Type', `application/${type}`);
    xhr.responseType = "blob";
    xhr.onload = function () {
      if (this.status == 200) {
        //接受二进制文件流
        console.log(this)
        var blob = this.response;
        const blobUrl = window.URL.createObjectURL(blob);
         // 这里的文件名根据实际情况从响应头或者url里获取
         const a = document.createElement('a');
         a.href = blobUrl;
         a.download = fileName;
         a.click();
         window.URL.revokeObjectURL(blobUrl);
      }
    }
    xhr.send();
  }
}

export function getBase64(file) {
  return new Promise((resolve, reject) => {
      const reader = new FileReader();
      reader.readAsDataURL(file);
      reader.onload = () => resolve(reader.result);
      reader.onerror = error => reject(error);
  });
}

export function fileProcess(fileUrl){
  return new Promise((resolve,reject)=>{
    var image = new Image();
    // 允许跨域操作
    image.setAttribute("crossOrigin",'anonymous');
    // 给img加上随机值一部分情况下能解决跨域
    image.src = fileUrl + '?time=' + new Date().valueOf();
    // image.src = fileUrl;
    image.onload = function(){
      var base64 = getBase64Image(image);
      console.log(base64,'base64')
      var newFile = dataURLtoFile(base64,'img111');
      console.log(newFile)
      demoImg.src=base64.dataURL;
      var blob = convertBase64UrlToBlob(base64);
      resolve(blob);
    }
    image.onerror = error => reject(error);
  })
}
